PAC Database - Detailed Chemical Data
Chemical Identity
| Chemical | CAS# | UN# | Health Code Numbers | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Spiro(isobenzofuran-1(3H),9'-(9H)xanthen)-3-one, 3',6'-dihydroxy-; (Fluorescein) | 2321-07-5 |
15.01
4.11
|
||||||||||
| Formula | Synonyms | |||||||||||
| C20.H12.O5 | ||||||||||||
Physical Properties
| Mol Wt | State | MP (°C) | BP (°C) | VP (Hg) | VP (°C) | SG | LEL (ppm) |
|---|---|---|---|---|---|---|---|
| 332.32 | S |
PAC Values
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 20 | 220 | 1300 |
| PAC-1 | PAC-2 | PAC-3 |
|---|---|---|
| 1.5 | 16 | 96 |
Technical Basis
A review of available sources identified the following: a rat oral LD50 toxicity data for Fluorescein. This data is selected for TEEL-3 development, based on the hierarchy listed in Table 3.1. It was evaluated according to type of exposure, species, and route factors in Tables 3.2, 3.3, and 3.4. TEEL-1 and TEEL-2 values were derived from this TEEL-3 as specified Table 3.5.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (6721 mg/kg)
This review generated TEEL values consistent with those published in Rev. 29A.
• TEEL-1 = TEEL-2/11
• TEEL-2 = TEEL-3/6
• TEEL-3 = Rat oral LD50 (6721 mg/kg)
This review generated TEEL values consistent with those published in Rev. 29A.
References
National Center for Biotechnology Information (2023). PubChem Compound Summary for CID 16850, Fluorescein. Retrieved from https://pubchem.ncbi.nlm.nih.gov/compound/Fluorescein
https://pubmed.ncbi.nlm.nih.gov/265392/